機電專業(yè)畢業(yè)設計-基于PLC的傳送帶控制系統(tǒng)設計



基于PLC的傳送帶的控制系統(tǒng)設計
摘 要
介紹了PLC在四節(jié)傳送帶控制系統(tǒng)中的應用，同時也詳細地敘述了系統(tǒng)中相關控制項目的設計方案及具體實現(xiàn)方法。文中還介紹了基于PLC與單片機的區(qū)別使我們能更加的清楚認識PLC，對學生熟悉PLC控制系統(tǒng)的結構和工作原理以及學習梯形圖的編寫都有很大的幫助。
 本系統(tǒng)是對四節(jié)傳送帶控制的系統(tǒng)，該設備適用于流水線生產等，也可以把生產出的貨物進行傳送到特定的地方。
高可靠性是電氣控制設備的關鍵性能。PLC由于采用現(xiàn)代大規(guī)模集成電路技術，采用嚴格的生產工藝制造，內部電路采取了先進的抗干擾技術，具有很高的可靠性。從PLC的機外電路來說，使用PLC構成控制系統(tǒng)，和同等規(guī)模的繼電接觸器系統(tǒng)相比，電氣接線及開關接點已減少到數百甚至數千分之一，故障也就大大降低。此外，PLC帶有硬件故障自我檢測功能，出現(xiàn)故障時可及時發(fā)出警報信息。在應用軟件中，應用者還可以編入外圍器件的故障自診斷程序，使系統(tǒng)中除PLC以外的電路及設備也獲得故障自診斷保護。
關鍵詞：傳送帶   PLC 故診斷控制　　可編程控制器  控制

Four conveyer belts simulation control
Abstract
Introduced PLC in four conveyer belts control system application, simultaneously also in detail narrated in the system to be connected the control project design proposal and the concrete realization method. In the article also introduced enables us based on PLC and the monolithic integrated circuit difference even more clearly to know PLC, is familiar with the PLC control system to the student the structure and the principle of work as well as the study trapezoidal chart compilation all has the very big help.
This system is a system which controls to four conveyer belts, this equipment is suitable for the production-runs and so on, also may the cargo which produces carry on transmits to the specific place.
The redundant reliability is the electricity control device essential performance. PLC because uses the modern large scale integrated circuit technology, used the strict production craft manufacture, the internal circuit has adopted the advanced antijamming technology, had the very high reliability. Machine the external circuit said from PLC that, uses the PLC constitution control system, compares with the same level scale relay system, the electrical wiring and the switch contact reduced to several hundred even several 1/1,000, the breakdown also greatly reduces. In addition, PLC has the hardware breakdown self-examination function, appears when the breakdown may promptly send out the warning information. In the application software, the application also may enroll the periphery component the breakdown from the diagnostic program, causes in the system also obtains the breakdown besides the PLC electric circuit and the equipment from the diagnosis protection
Key word:    Control          Programmable  controller
 
目錄
摘要…………………………………………………………………………………… ………Ⅰ
Abstract…………………………………………………………………………………… ….Ⅱ
目錄…………………………………………….……………………………………………….Ⅲ
引言…………………………………………………………………….………………………..1
第一章 可編程控制器的概述…………………………………………….……………………2
1.1 可編程邏輯控制器（PLC）………………………………………….……………………2
1.2 可編程邏輯控制器（PLC）的產生………………………………….……………………2
1.3 可編程邏輯控制器的特點……………………………………………..…………………..3
1.4 可編程邏輯控制器的分類………………………………………………..………………..5
1.5 可編程邏輯控制器的的發(fā)展………………………………………………..……………..6
1.5.1國外的PLC的發(fā)展…………………………………………………..…………….6
1.5.2國內的PLC的發(fā)展…………………………………………………..…………….7
1.5.3 PLC的展望……………………………………………………………...………….7
第二章 可編程控制器的結構和原理……………………………………………….…………8
2.1 可編程控制器的基本結構………………………………………………………...……….8
2.2 可編程控制器的編程語言…………………………………………………………..……..9
第三章 PLC與繼電器，單片機的異同………………………………………………………12
3.1 什么是PLC………………………………………………………………………………..12
3.2  PLC與單片機的區(qū)別…………………………………………………………………….12
3.3 PLC與繼電器系統(tǒng)的異同…………………………………………………………...…….12
3.4 PLC系統(tǒng)的設計……………………………………………………………………...…….13
   3.4.1 PLC的選型原則………………………………………………………………..…….13
   3.4.2 可編程順序控制器的設計流程…………………………………………….……….14
3.5 PLC的自動檢測功能及故障診斷………………………………………………..………..15
   3.5.1 超時檢測………………………………………………………………….………….15
   3.5.2 邏輯錯誤檢查………………………………………………………….…………….16
第四章  傳送帶的介紹……………………………………………………….……………….17
  4.1 傳送帶常見的故障由與維護……………………………………….…………………..17
     4.1.1 傳送帶常見的故障………………………………………………………………..17
     4.1.2 傳送帶跑偏………………………………………………………………………..17
 4.2 四級傳送帶的設計………………………………………………………………………18
    4.2.1 四級傳送帶的控制要求………………………………….………………………..18
    4.2.2 四級傳送帶的視圖……………………………………..………………………….19
    4.2.3 輸入、輸出分配表…………………………………….…………………………..20
    4.2.4 電動機接線圖………………………………………….…………………………..20
    4.2.5 PLC接線圖…………………………………………...…………………………….21
    4.2.6 控制面板……………………………………………...……………………………21
    4.2.7 程序梯形圖…………………………………………..…………………………….22
總結……………………………………………………………….……………………………..27
參考文獻…………………………………………………………………………………………1
致謝………………………………………………………………………………………………2
附錄………………………………………………………...…………………………………….3